Key Points
- On May 4, Massachusetts’ highest court examined arguments about Kalshi’s ability to operate sports-event contracts without obtaining a gaming license from the state
- Court justices probed the distinctions between Kalshi’s offerings and conventional sports wagering platforms
- The company contends that federal CFTC regulations under Dodd-Frank give it exclusive oversight authority
- State Attorney General Andrea Campbell secured a temporary court order in February halting Kalshi’s sports-related contracts
- A ruling upholding the ban would place Massachusetts alongside Nevada as states successfully blocking Kalshi via litigation
On Monday, the Massachusetts Supreme Judicial Court conducted oral arguments examining whether Kalshi, a prediction market operator, may continue providing sports-event contracts within state borders. The decision could establish Massachusetts as the nation’s second state to successfully halt the platform’s operations through judicial action.
Grant Mainland, representing Kalshi, maintained that regulatory authority over his client’s operations rests exclusively with the U.S. Commodity Futures Trading Commission. He urged justices to reverse a temporary injunction preventing Kalshi from accepting financial positions on sporting events including football and baseball without state gaming authorization.
“At its core, this represents a federal regulatory matter,” Mainland stated before the court. Multiple justices among the seven-member panel challenged this assertion throughout the proceedings.
Justice Gabrielle Wolohojian questioned Mainland about distinguishing characteristics between Kalshi’s products and established sportsbooks. “How do they differ from what people commonly understand as a wager,” she inquired.
The Company’s Preemption Defense
Mainland referenced Kalshi’s CFTC registration status. His argument centered on classifying the company’s sports contracts as “swaps”—a category of financial derivatives that Congress assigned to exclusive CFTC supervision via the Dodd-Frank Act.
He referenced a recent decision from the 3rd U.S. Circuit Court of Appeals issued in April. That appellate panel halted New Jersey officials from taking enforcement measures against Kalshi, affirming the company’s federal jurisdiction argument.
Mainland noted the CFTC submitted a friend-of-the-court brief backing Kalshi’s Massachusetts appeal. The federal agency’s participation demonstrates its position that these financial instruments belong under its regulatory umbrella.
Kalshi and comparable services allow participants to take positions on event outcomes. Topics span from political contests to athletic competitions. State authorities contend these operations lack appropriate licensing.
Last September, Massachusetts Attorney General Andrea Campbell initiated legal action against Kalshi. Her complaint alleged violations of state gaming statutes, including provisions prohibiting participation by individuals below age 21.
Campbell obtained a preliminary court order in February designed to prevent Kalshi from marketing sports contracts statewide. Implementation of that directive remains suspended during the appeal process.
State Regulators Challenge Prediction Market Operations
Should the injunction become enforceable, Massachusetts would become the second jurisdiction after Nevada to successfully block Kalshi through litigation. This proceeding represents a significant battleground in the expanding regulatory conflict surrounding prediction market oversight nationwide.
Justice Scott Kafker questioned whether Congressional intent included eliminating traditional state oversight of gambling activities. “For someone wanting to wager on a game, this provides a mechanism,” he observed.
Kafker suggested Congress would have provided explicit language if its goal was removing state gambling regulation authority. His remarks reflected apprehensions voiced by enforcement officials in numerous jurisdictions.
Assistant Attorney General Gerard Cedrone cautioned that a favorable ruling for Kalshi would represent a fundamental shift in gaming oversight. “This would eliminate state regulation of what amounts in every way to a sports wager,” he informed the panel.
This proceeding constitutes one among multiple ongoing legal disputes Kalshi confronts nationwide. The platform maintains operations in most jurisdictions while various appeals advance.
The court provided no timeline for issuing its decision. The CFTC’s supporting brief ranked among the latest documents filed in the matter.


